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# F(-3) = -15 # F(3) = 9
F(-3) = a(-3) + b F(3) = a(3) + b
-15 = -3a + b 9 = 3a + b
-3a + b = -15 3a+b = 9
# Keduanya dieliminasi
-3a + b = -15 # 3a + b = 9
3a + b = 9 3(4) + b = 9
-6a = -24 b = 9 - 12 = -3
a = 24/6 = 4
Jadi, a = 4 dan b = -3
a. Rumus fungsinya adalah F(x) = 4x -3
b. F(-2) + F(2)
= [4(-2) - 3] + [4(2) - 3]
= 11 - 5 = 6